Wall swivel



July 16, 1957 N. R. SCHWARTZ 2,799,742

WALL SWIVEL Original Filed March 18, 1952 I INVENTOR.

NAM/W RODNEYJUIWARTI AWORNEK United States Patent WALL SWIVEL NathanRodney Schwartz, Brooklyn, N. Y., assignor to Naras Research, Inc., NewYork, N. Y.

Original application March 18, 1952, Serial No. 277,101. Divided andthis application July 29, 1953, Serial No. 371,095

4 Claims. (Cl. 20051) This invention relates broadly to swivel jointsand more particularly to swivel joints used in mounting an electricallighting fixture to a vertical support such as a wall. The presentapplication is a division of the application entitled Lamp Joint, filedon March 18, 1952, under Serial No. 277,101, now abandoned.

It is the principal object of the present invention to provide a swiveljoint for an electrical lighting fixture,

whereby angular or rotative motion may be imparted to an arm at one endof which an electrical lighting fixture is secured.

A further feature of the present invention resides in the provision of aswivel joint of this character, wherein rotative movement is limited toslightly less than one complete revolution in either direction.

Yet another advantage of the present invention resides in the provisionof a swivel joint of this character, by means of which a lightingfixture attached thereto may be rotated about its axis and adjustedangularly relative to its normal axis, and wherein the lighting fixtureso adjusted will remain in any of its adjusted positions until theadjustment is manually altered.

And a still further purpose of the present invention resides in theprovision of a swivel joint of this character, which has a wall plateattached thereto, whereby the swivel joint and the lighting fixturemounted thereon may be attached to a wall or any other suitable anddesirable perpendicular support.

And a still further advantage of the present invention resides in theprovision of a swivel joint of this character by means of which angularand rotative adjustment of a lighting unit attached thereto may beachieved without the use of bolts or nuts.

These and other meritorious aims and advantages, which will become morefully apparent as the description hereof proceeds, are attained by thenovel construction, combination and arrangement of parts, hereinafterdescribed, and illustrated in the accompanying drawing, forming amaterial component of this disclosure, and in which:

Figure 1 is a side elevational view of an electrical lighting fixtureprovided with the wall swivel of the present invention.

Figure 2 is a front elevational view of the lighting fixture illustratedin Figure 1.

Figure 3 is a detail view of the wall swivel of the present invention,drawn to an enlarged scale.

Figure 4 is a right hand view of the swivel joint illustrated in Figure3.

Referring in greater detail to the drawing, the numeral 20 illustratesin general an electrical lighting fixture, comprising broadly a wallplate 21 whereby the lighting fixture may be mounted to a support, apair of extension arms referred to by the numerals 28 and 30 jointedendwise by a swivel socket 29 and a lamp 23 the reflector 31 of which issecured to the free end of arm 30. Neither the arm 30 nor the swivelsocket 29 nor the lamp 23 form "ice a part of the subject-matter of thepresent application, hence none of these elements will here be furtherdescribed nor more specifically illustrated.

The present invention comprises a swivel joint broadly referred to bythe numeral 27. Swivel joint 27 consists of two hollow cylindricalshells 33 and 36 respectively, each of the said shells terminating atits outer end in a rounded portion, as is illustrated in Figures 1 and3.

Superimposed upon shell 33 near its inner end is a cylindrical sleeve34, extending practically to the inner edge of shell 33. Embracing theinner end of shell 36 is a hollow tubular sleeve member, referred to bythe a substantially spherical swivel member 37 having an internallythreaded opening vertically therethrough, to receive the externallythreaded end 38 of a nipple 60 which is cylindrical in cross-section andhollow in its interior. Swivel member 37 is seated upon a washer 40,which is urged against the rounded upper portion of shell 36 by acompression spring 41, preferably seated upon a pair of washers 42 and43 respectively, the washers being made of metal and fibre respectively,and joined as at 44. There is further provided a wall plate 24, whichhas openings therein for the passage of screws 45 and lock nuts 46therethrough and through corresponding openings in sleeve 35, and wallplate 24 is further provided with openings for the passage therethroughof screws 47 and lock nuts 48 therethrough and through correspondingopenings in sleeves 34 and 35 whereby the sleeves are held in engagementwith each other and with the plate 24. There may also be providedbushings 49 in wall plate 24 through which electrical wires 51 may passfrom within the shells 33 and 36 through wall plate 24. A conventionalswitch 32 may be located at a convenient and suitable place, such as forinstance the rounded end of shell 33. A wall or other mounting surfaceis illustrated at 25 to which the wall plate 24 may be attached by nails26 or otherwise.

The end of nipple 60 extending beyond the rounded upper end of shell 36,may have one end of arm 28 secured thereto. At the end of arm 28, unit29 illustrated in Figure 1 may be mounted, or a lighting fixture may besecured to the end of the said arm.

Thus there has been shown and described a simple, yet highly effectiveswivel socket, whereby a lighting unit may be mounted against a wall orother vertical surface. By means of this swivel socket, the lightingfixture so mounted may be turned upon its axis or moved angularly up toabout of its normal axis and retained in any of its adjusted positionsuntil that position is changed by moving arm 28 in an obvious manner.

The drawing and description are to be regarded merely as descriptive andillustrative of the best known form of the present invention, and notlimitative or restrictive to the exact details shown, applicantreserving the right to make such changes in his device as may comewithin the scope of the appended claims, without thereby departingeither from the spirit or the scope of the appended claims.

Having thus described the invention, what is new and desired to secureby Letters Patent, is:

1. A swivel unit for attachment to a vertical support comprising a pairof hollow cylindrical shells arranged in edgewise vertical alignment,each of said shells terminating at their opposite ends in a roundedportion, an opening in one of said roundedends extending in onedirection from the apex to a point therebelow, a swivel member in thatshell, a washer upon which said swivel member is seated, means urgingsaid washer and said swivel member toward the rounded end of said shell,a nipple extending from said swivel member through said shell at theopening therein, retaining means upon which'said urging means is seated,said nipple adapted to be angularly disposed in said opening, acircumferentially positioned sleeve embracing one of said shells at itscylindrical edge, a second sleeve of larger diameter than said firstnamed sleeve, said second sleeve embracing said other shell at itscylindrical edge, said first named sleeve adapted to enter into saidsecond named sleeve, a plate, means providing side openings therein forthe passage of retainers therethrough and through corresponding sideopenings in said sleeves whereby said sleeves are secured to said plate,said opening positioned to prevent movement of said nipple from thevertical toward said plate and permit movement of the said nipple awayfrom said plate.

2. The swivel unit as set forth in claim 1 in which an electric switchincluding an interrupting mechanism and operating means is secured tothe other shell, said interrupting mechanism being disposed within saidother shell and said operating means positioned exteriorly thereof.

3. The swivel unit as set forth in claim 2 in which the operating meansis positioned at the rounded portion of the other shell.

4. A swivel unit for attachment to a vertical support comprising a pairof hollow cylindrical shells arranged in edgewise vertical alignment,each of said shells terminating at their opposite ends in a roundedportion, an opening in one of said rounded ends extending in onedirection from the apex to a point therebelow, a swivel member in thatshell, a washer upon which said swivel member is seated, means urgingsaid washer and said swivel member toward the rounded end of said shell,a nipple extending from said swivel member through said shell at theopening therein, retaining means upon which said urging means is seated,said nipple adapted to be angularly disposed in said opening, acircumferentially positioned sleeve embracing one of said shells at itscylindrical edge, a second sleeve of larger diameter than said firstnamed sleeve, said second sleeve embracing said other shell at itscylindrical edge, said first named sleeve adapted to enter into saidsecond named sleeve, 2. plate, means providing side openings therein forthe passage of retainers therethrough and through corresponding sideopenings in said sleeves whereby said sleeves are secured to said plate,said opening positioned to prevent movement of said nipple from thevertical towards said plate and permit movement of the said nipple awayfrom said plate, and an electric switch including an interruptingmechanism and an operating handle, said interrupting mechanism disposedwithin said other shell and said operating handle positioned exteriorlyof said other shell at the rounded portion thereof; said sleeves, saidother shell, and said plate having wire openings, all of said wireopenings being in alignment; a first, a second and a third insulatedelectrical conductor each havng a first end and a second end, a portionof said first coiiductor positioned within said nipple with its saidfirst end secured to said electric switch and its second end extendingbeyond the swivel unit, a portion of said second conductor positionedwithin said wire openings with its said first end secu'red to saidelectric switch and its said second end exten ing beyond said swivelunit, a first portion of said th'nd c'onductor positioned within saidnipple and a second portion positioned within said wire openings withits first and second ends extending beyond the confines of said swivelunit.

References Cited in the file of this patent UNITED STATES PATENTS1,345,334 Stafford June 29, 1920 1,423,309 Curtis July 18, 19221,469,528 Owens 1 Oct. 2, 1923 1,780,712 Little Nov. 4, 1930 1,925,335Murphy Sept. 15, 1933 2,116,050 Stock May 3, 1938 2,456,182 Goble Dec.14, 1948 2,472,624 Schwartz June 7, 1949 FOREIGN PATENTS 723,955 FranceJune 23, 1932

